coranaev.m

遗传算法优化神经网络结构和链接权

function [val] = coranaEval(sol)
% function [val] = coranaEval(sol)
% Determines the value of the Corana function at point sol.
% This function is used in gademo2.
% val - the value of the Corana function at point sol
% sol - the location to evaluate the Corana function

numv = size(sol,2);
x=sol(1:numv);
d0=[1 1000 10 100 1 10 100 1000 1 10];
d=d0(1:numv);
c=0.15;
s=.2*ones(1,numv);
t=0.05*ones(1,numv);
bk = s.*(round(x./s));
dev= (abs(bk-x)<t) & (bk~=0);
z=c*((bk+sign(bk).*t).^2).*d;
y=x.^2.*d;
val = sum((dev.*z) + ((~dev).*y));